Statistical properties of the radio cores in elliptical galaxies

Details Statistical properties of the radio cores in elliptical galaxies Statistical properties of the radio cores in elliptical galaxies

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...139...55f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 139, no. 1, Oct. 1984, p. 55-63.

Astronomy and Astrophysics

Astrophysics

48

Elliptical Galaxies, Galactic Nuclei, Radio Galaxies, Statistical Correlation, Magnitude, Radiant Flux Density, Radio Spectra

Scientific paper

A statistical study of the properties of the radio cores in elliptical galaxies has been performed on a sample of 138 radio galaxies taken from the B2 and 3CR catalogues. About two thirds of these objects have a detected core at 5 GHz. A statistically significant correlation is found between the core and the total radio power. However, the large dispersion around the best fit regression line implies that the core radio power is not a good indicator of the total radio power. Moreover, the authors find a correlation between the core radio power and the optical absolute magnitude: optically brighter galaxies tend to have higher core radio powers. Within the limited redshift range of the sample, no redshift dependence of the two correlations is found.

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